543643611362164 has 24 divisors (see below), whose sum is σ = 961231359577608. Its totient is φ = 269006354319360.

The previous prime is 543643611362161. The next prime is 543643611362167. The reversal of 543643611362164 is 461263116346345.

It is an interprime number because it is at equal distance from previous prime (543643611362161) and next prime (543643611362167).

It can be written as a sum of positive squares in 4 ways, for example, as 349886676846564 + 193756934515600 = 18705258^2 + 13919660^2 .

It is a super-2 number, since 2×543643611362164² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543643611362161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26341759 + ... + 42203974.

It is an arithmetic number, because the mean of its divisors is an integer number (40051306649067).

Almost surely, 2^{543643611362164} is an apocalyptic number.

It is an amenable number.

543643611362164 is a deficient number, since it is larger than the sum of its proper divisors (417587748215444).

543643611362164 is a wasteful number, since it uses less digits than its factorization.

543643611362164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68566275 (or 68566273 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 55.

The spelling of 543643611362164 in words is "five hundred forty-three trillion, six hundred forty-three billion, six hundred eleven million, three hundred sixty-two thousand, one hundred sixty-four".